Fix search/create form submit
First draft of user-uploaded coverphotos :)
Reworked cover photo.

Wrote own coverphoto.js code -- the one I found on github doesn't really work
perfectly.  This code will take a relatively-scaled image and save a cropped
version of the image that's scaled accordingly.

Playing with having the map displayed beneath the cover text if there's no
cover photo set, as well.
Fixed some issues with the default map cover.

We're now auto-sizing the cover map just like with a cover photo.
Set blank=False on string fields.

Fixes #616.
Responsive cover-ness + map links to main map
Use Front Page content in the front page :p
Merge branch 'autogenerated_front_page' into hub

Conflicts:
	localwiki/frontpage/templates/frontpage/base.html